Originally Posted by dodgeguy
I do not think disengaging the sensor as you put it would increase performance. The timing is advanced at high RPM's. So it does take a different gearing in the car. This is suppose to be a running change on the GTB.
I believe the GM ESC's will disengage the sensors at certain RPM's, since supposedly sensorless is more efficient at high RPM? That's how I understand it, anyway. If true, I could envision a scenario where the sensors are used for low RPM and startup, and then back EMF used when the motor is really spinning. It's all beyond my realm of knowledge, though. Perhaps one of Novak's keen engineers can comment further.